Film condensation heat transfer characteristics are studied by numerical simulation for a single horizontal tube in the presence of a noncondensablegas.
为查明不凝气体对水平管外膜状凝结换热特性的影响规律，建立了水平单管的气、液双边界层模型。
2
The vapor liquid two boundary layer model is applied to predict local mass concentration of the noncondensablegas, temperature profiles and velocity profiles in the boundary layer.
Propylene recovery at a rate above 85% from the non-condensablegas released from polypropylene plant was carried out with membrane separation technique.